Radiation Protection of CSR

SU You-Wu; LI Wu-Yuan; LI Zong-Qiang; ZHENG Hua-Zhi; ZHU Xiao-Long

Chinese Physics C> 2005, Vol. 29> Issue(11) : 1100-1103

Radiation Protection of CSR

Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China

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Abstract：
The construction of CSR (cooling storage ring) which includes a main ring (CSRm) and an experimental ring (CSRe) will be finished at the end of 2005. Heavy ions of carbon to uranium will be accelerated up to 900MeV/u and 400MeV/u at intensity of 10⁸ pps. The HIRFL (heavy ion research facility in Lanzhou) will be used as the injector. For the shielding design of CSR, the secondary neutrons due to the ion beam loss, their spectra and angular distributions were estimated based on the experimental results. The dose equivalent outside the shielding surface and in the surrounding environment and the neutron skyshine dose equivalent were also estimated in this study. The experimental result, neutron yield, spectrum and angular distribution for 400MeV/u ¹²C+Cu reaction were used for estimating the source term of shielding design. It is found that the most important environmental radiation impact component of CSR is the skyshine neutrons.

References

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. Madey R et al. Phys. Rev., 1983, C28: 7062. Barbier M M. SIS-ESR Shielding. GSI Restricted Material3. Nakamura T et al. A Systematic Experiment Studyof Thick-Target Neutron Yield for High-Energy Heavy Ions. The 4th International Meetings of SATIF. ORNL,Knoxville, USA, Sep. 17—18, 19984. LIU Yuan-Zhong et al. Report of Environmental Impact of CSR. Restricted Material, 1998

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SU You-Wu, LI Wu-Yuan, LI Zong-Qiang, ZHENG Hua-Zhi and ZHU Xiao-Long. Radiation Protection of CSR[J]. Chinese Physics C, 2005, 29(11): 1100-1103.

SU You-Wu, LI Wu-Yuan, LI Zong-Qiang, ZHENG Hua-Zhi and ZHU Xiao-Long. Radiation Protection of CSR[J]. Chinese Physics C, 2005, 29(11): 1100-1103. shu

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Received: 2005-03-15
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Radiation Protection of CSR

Corresponding author: SU You-Wu,

Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China

Received Date: 2005-03-15
Accepted Date: 1900-01-01
Available Online: 2005-11-05

Abstract: The construction of CSR (cooling storage ring) which includes a main ring (CSRm) and an experimental ring (CSRe) will be finished at the end of 2005. Heavy ions of carbon to uranium will be accelerated up to 900MeV/u and 400MeV/u at intensity of 10⁸ pps. The HIRFL (heavy ion research facility in Lanzhou) will be used as the injector. For the shielding design of CSR, the secondary neutrons due to the ion beam loss, their spectra and angular distributions were estimated based on the experimental results. The dose equivalent outside the shielding surface and in the surrounding environment and the neutron skyshine dose equivalent were also estimated in this study. The experimental result, neutron yield, spectrum and angular distribution for 400MeV/u ¹²C+Cu reaction were used for estimating the source term of shielding design. It is found that the most important environmental radiation impact component of CSR is the skyshine neutrons.